When present, it specifies that an option should be pre-selected when the page loads. The selectedIndex property sets or returns the index of the selected option in a drop-down list. Note: If the drop-down list allows multiple selections it will only return the index of the first option selected. The selected attribute is a boolean attribute. The read-only HTMLSelectElement property selectedOptions contains a list of the elements contained within the element that are currently selected. I want to use jQuery to check each option's value against a Javascript var. The issue that you are having is because you are trying to modify the Status Reason system field. This Javascript post was going to be about language selection in FCKEditor from a drop down box as a follow up to the previous FCKEditor post but I've decided to postphone that post until Friday and look at how to add options to an HTML drop down box with Javascript, because the next FCKEditor post will be doing just that. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Set selected value. What you do is use the “selected-selector” of jQuery to do it in a single line. Tip: The selected attribute can also be set after the page loads, with a JavaScript. Note: This property is read-only selectedIndex: Sets or returns the index of the selected element in the collection (starts at 0) The list of selected options is an HTMLCollection object with one entry per currently selected option. So many wrong answers! Teams. Q&A for Work. The pre-selected option will be displayed first in the drop-down list. To specify the value that a form field should revert to upon resetting the form, use the following properties: Checkbox or radio button: defaultChecked Any other elements in the collection. In JavaScript, selectedIndex property is used to set the value of a select box element. The text property of an option is the content of the option element.. Lets say I have the following select element and I need to dynamically select the option with a value of 3, which would be the “Peach”. Note: The value "-1" will deselect all options (if any). This tutorial explains how you can perform common operations on select element with vanilla Javascript - adding/deleting options or getting/setting the selected options. Note: Integer number is used for Index at the value place. Note: If no option is selected, the selectedIndex property will return -1. The index starts at 0. You have a select element, and you need to “select” one of its options based on one of its values. In my HTML, I have a with three elements. An option is considered selected if it has an HTMLOptionElement.selected attribute. Javascript Select options. In a Javascript combobox you can set a selected value as you wish. Using a for Loop to Obtain Selected Option. 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